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statistics namespace show

Namespace throughput and latency metrics

Availability: This command is available to cluster and Vserver administrators at the admin privilege level.

Description​

This command continuously displays performance data for Namespaces at a regular interval. The command output displays data in the following columns:

  • Namespace - Namespace name.
  • Vserver - vserver name.
  • Total Ops - total number of operations per second.
  • Read Ops - read operations per second.
  • Write Ops - write operations per second.
  • Other Ops - other operations per second.
  • Read (Bps) - read throughput in bytes per second.
  • Write (Bps) - write throughput in bytes per second.
  • Latency(ms) - average latency for an operation in milliseconds.

Parameters​

[-namespace <text>] - Namespace
Selects the Namespace for which you want to display performance data.
[-vserver <vserver name>] - Vserver
Selects the vserver for which you want to display performance data.
[-sort-key <text>] - Column to Sort By
If this parameter is specified, the command displays statistics sorted by the specified column.
-interval <integer> - Interval
Specifies, in seconds, the interval between statistics updates. The default setting is 5 seconds.
-iterations <integer> - Iterations
Specifies the number of iterations the command runs before terminating. The default setting is 1. If the number is 0 (zero), the command continues to run until you interrupt it by pressing Ctrl-C.
-max <integer> - Maximum Number of Instances
Specifies the maximum number of Namespaces to display. The default setting is 25.

Examples​

The following example displays Namespace statistics: 

cluster1::> statistics namespace show
cluster1 : 12/31/2020 16:00:04

                    *Total Read Write Other   Read Write Latency
  Namespace Vserver    Ops  Ops   Ops   Ops  (Bps) (Bps)    (ms)
 ---------- ------- ------ ---- ----- ----- ------ ----- -------
 ns1            vs1     58   13    15    29 310585  3014      39
 ns0            vs2     56    0    11    45   8192 28826      47


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